ES445862A1 - Clamping device for a rotatable information-carrying record - Google Patents

Clamping device for a rotatable information-carrying record

Info

Publication number
ES445862A1
ES445862A1 ES445862A ES445862A ES445862A1 ES 445862 A1 ES445862 A1 ES 445862A1 ES 445862 A ES445862 A ES 445862A ES 445862 A ES445862 A ES 445862A ES 445862 A1 ES445862 A1 ES 445862A1
Authority
ES
Spain
Prior art keywords
record
centring
edge
hole
clamping device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES445862A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES445862A1 publication Critical patent/ES445862A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/032—Positioning by moving the door or the cover

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

A clamping device for rotatably driving an information carrying record such as a rigid or flexible video record and comprising a drive spindle, a record support disposed thereon, a substantially conical centring member having a diameter which varies from a diameter smaller than to greater than that of the record hole, which also during operation co-operates with the edge of the central hole in the record, and furthermore resilient pressure means for pressing the centring surface and the edge of the central hole in the record against each other. The centring member is rigidly connected to the record support, while the part of the centring surface which co-operates with the record hole is disposed at some axial distance from other parts of the record support and a resilient record loading device is provided which during operation bears on the record and is movable opposite to centring member for pressing the edge of the record against the centring surface, so that during starting the record can tilt into a plane which is perfectly perpendicular to the axis of rotation of the drive spindle under the influence of the centrifugal forces acting on it.
ES445862A 1975-03-10 1976-03-08 Clamping device for a rotatable information-carrying record Expired ES445862A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7502804,A NL174998C (en) 1975-03-10 1975-03-10 CLAMPING DEVICE FOR A ROTARY DRIVABLE INFORMATION CARRIER.

Publications (1)

Publication Number Publication Date
ES445862A1 true ES445862A1 (en) 1977-05-01

Family

ID=19823334

Family Applications (1)

Application Number Title Priority Date Filing Date
ES445862A Expired ES445862A1 (en) 1975-03-10 1976-03-08 Clamping device for a rotatable information-carrying record

Country Status (12)

Country Link
US (1) US3980308A (en)
AU (1) AU500833B2 (en)
CA (1) CA1057852A (en)
DE (1) DE2607518B2 (en)
DK (1) DK96576A (en)
ES (1) ES445862A1 (en)
FR (1) FR2304136A1 (en)
GB (1) GB1538568A (en)
IT (1) IT1057679B (en)
NL (1) NL174998C (en)
NO (1) NO760794L (en)
SE (2) SE421256B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040089A (en) * 1976-06-14 1977-08-02 Rca Corporation Disc master positioning apparatus for a recording system
NL7609375A (en) * 1976-08-24 1978-02-28 Philips Nv CLAMPING DEVICE FOR A ROTATING DRIVE INFORMATION-BEARING PLATE.
DE2724823A1 (en) * 1977-06-02 1978-12-07 Bosch Gmbh Robert Disc holder for optical recording system - has raised, ring-shaped support surfaces on disc carrier mounted on shaft and pressure disc
NL182032C (en) * 1978-06-05 1987-12-16 Philips Nv DEVICE FOR CENTERING, DIRECTIONING AND CLAMPING A ROTATING PLATE.
US4224648A (en) * 1978-10-16 1980-09-23 Control Data Corporation Disc centering
US4378576A (en) * 1980-06-27 1983-03-29 Magnetic Peripherals Inc. Removable disc media
US4350379A (en) * 1980-10-10 1982-09-21 General Electric Company Universal lifting magnet
US4367547A (en) * 1981-05-04 1983-01-04 Wayne H. Coloney Co., Inc. Apparatus for holding record disks by vacuum
US4499573A (en) * 1981-07-20 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Disc rotating apparatus
JPS5814382A (en) * 1981-07-20 1983-01-27 Toshiba Corp Digital disc player
JPS5814386A (en) * 1981-07-20 1983-01-27 Toshiba Corp Digital disc player
US4539671A (en) * 1982-09-24 1985-09-03 Sony Corporation Recording and/or reproducing apparatus for a disk
JPS5971487U (en) * 1982-10-29 1984-05-15 ソニー株式会社 Magnetic disk rotation mounting base
WO1985001380A1 (en) * 1983-09-19 1985-03-28 Storage Technology Partners Ii Optical disk format employing resynchronizable data sectors
DE3582133D1 (en) * 1984-12-28 1991-04-18 Yamaha Corp DISK CLAMP DEVICE FOR A DISK CARTRIDGE.
JPS62223850A (en) * 1986-03-25 1987-10-01 Sharp Corp Disk clamping device
US5001700A (en) * 1989-03-30 1991-03-19 Literal Corporation Disk clamp and centering apparatus for a beam addressable disk drive system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634134A (en) * 1949-07-27 1953-04-07 Edison Inc Thomas A Record-disk centering and clamping mechanism
US2943861A (en) * 1956-05-28 1960-07-05 Rca Corp Multi-speed phonograph record player
US3071381A (en) * 1960-05-16 1963-01-01 Cons Electronics Ind Phonograph turntable
US3176281A (en) * 1961-10-23 1965-03-30 Ibm Portable memory for data processing machine
US3377072A (en) * 1965-12-11 1968-04-09 Gentilini Augusto Portable record player
US3784853A (en) * 1972-05-03 1974-01-08 P Wangsness Homopolar motor forming a sound record support
US3768815A (en) * 1972-06-21 1973-10-30 Ibm Apparatus for clamping and centering a flexible magnetic disk
JPS4981012A (en) * 1972-12-08 1974-08-05

Also Published As

Publication number Publication date
FR2304136B1 (en) 1981-06-26
NL174998C (en) 1984-09-03
SE419139B (en) 1981-07-13
GB1538568A (en) 1979-01-24
IT1057679B (en) 1982-03-30
AU1179376A (en) 1977-09-15
DK96576A (en) 1976-09-11
SE421256B (en) 1981-12-07
DE2607518A1 (en) 1976-09-30
CA1057852A (en) 1979-07-03
NL174998B (en) 1984-04-02
US3980308A (en) 1976-09-14
NL7502804A (en) 1976-09-14
NO760794L (en) 1976-09-13
SE8006628L (en) 1980-09-23
AU500833B2 (en) 1979-05-31
FR2304136A1 (en) 1976-10-08
DE2607518C3 (en) 1988-03-24
SE7602604L (en) 1976-09-11
DE2607518B2 (en) 1980-05-29

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